Analysis of soil radon data in earthquake precursory studies

Hari Prasad Jaishi, Sanjay Singh, Raghavendra Prasad Tiwari, Ramesh Chandra Tiwari


Soil radon data were recorded at two selected sites along Mat fault in Mizoram (India), which lies in the highest seismic zone in India. The study was carried out during July 2011 to May 2013 using LR-115 Type II films. Precursory changes in radon concentration were observed prior to some earthquakes that occurred around the measuring sites. Positive correlation was found between the measured radon data and the seismic activity in the region. Statistical analysis of the radon data together with the meteorological parameters was done using Multiple Regression Method. Results obtained show that the method employed was useful for removing the effect of meteorological parameters and to identify radon maxima possibly caused by seismic activity.


LR-115; Radon monitoring; Correlation; Seismic activity

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Published by INGV, Istituto Nazionale di Geofisica e Vulcanologia - ISSN: 2037-416X